यदि $[x]$ महत्तम पूर्णांक $\leq x$ है,तो $\pi^{2} \int_{0}^{2}\left(\sin \frac{\pi x}{2}\right)(x-[x])^{[x]} d x$ का मान ज्ञात कीजिए :

  • A
    $2(\pi-1)$
  • B
    $4(\pi-1)$
  • C
    $4(\pi+1)$
  • D
    $2(\pi+1)$

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मान लीजिए कि $f(x)$ और $g(x)$ दो फलन हैं जो $f(x^{2}) + g(4-x) = 4x^{3}$ और $g(4-x) + g(x) = 0$ को संतुष्ट करते हैं। तो $\int_{-4}^{4} f(x) dx$ का मान ज्ञात कीजिए।

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